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（哈爾濱工業(yè)大學建筑設計研究院， 哈爾濱 150090）
［摘要］鄭州大劇院工程平面布置復雜，各劇場均存在局部樓層錯層、樓板開大洞、豎向構件局部轉換等不規(guī)則情況，屬于特別復雜的高層建筑結構。結合《建筑抗震設計規(guī)范》（GB 50011—2010）的要求，采用三水準、兩階段設計方法，對主體結構進行了詳細的彈性和彈塑性時程分析，對鋼結構屋蓋和圍護桁架進行整體穩(wěn)定性分析。結果表明，地震作用下主體結構具備較好的承載和變形能力，能夠達到小震彈性、中震可修、大震不倒的性能指標。通過罕遇地震作用下的彈塑性時程分析，找出了結構潛在的抗震薄弱部位和薄弱構件，并提出相應的抗震加強措施，為類似工程設計提供參考。
［關鍵詞］超限復雜結構； 抗震性能分析； 彈塑性分析； 抗震加強措施； 鋼結構； 網(wǎng)架； 圍護桁架
中圖分類號：TU242-2文獻標識碼：A文章編號：1002-848X(2018)12-0050-06
Seismic design of out-of-code complex structure of Zhengzhou Grand Theater
Yuan Zhenjun, Su Fangdi, Mao Xiaodong, Wang Guoxing, Li Xiaolei, Wang Jun, Gao Meizi, Li Gang
(The Architectural Design and Research Institute of HIT， Harbin 150090, China)
Abstract:The plane layout of the Zhengzhou Grand Theater project is complicated. There are irregular situations in all theaters of Zhengzhou Grand Theater, such as partial staggered floors, large openings in floors, and partial conversion of vertical components. Zhengzhou Grand Theater is a particularly complex high-rise building structure. Combining with the Code for seismic design of buildings(GB 50011—2010), "three-level and two-stage" design principles were adopted to perform detailed elastic and elasto-plastic time-history analysis of the main structure. The overall stability analysis was performed on the steel grid roof and the enclosure truss. The results show that under the action of earthquakes, the main structure has good bearing and deformation capabilities, and can reach the performance objectives of elasticity under frequent earthquakes, repairable under fortification earthquakes, and not collapsing under rare earthquakes. Through the elasto-plastic time-history analysis under the rare earthquakes, potential weak seismic locations and weak components were identified, and corresponding seismic strengthening measures were put forward, which provided a reference for similar engineering designs.
Keywords:out-of-code complex structure; seismic performance analysis; elasto-plastic analysis; seismic strengthening measure; steel structure; grid; enclosure truss
作者簡介：袁振軍，碩士，高級工程師，一級注冊結構工程師，Email:yuanloc2004@163.com。
